Home / 13,757.82-20,631.54-5,439.66

Finding the Fourth Proportional to 13,757.82, 20,631.54 and 5,439.66

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Solution

The fourth proportional to 13,757.82, 20,631.54 and 5,439.66 is: 8,157.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.82 : 20,631.54 = 5,439.66 : x
  2. Step 2: Convert to fraction form
    13,757.82/20,631.54 = 5,439.66/x
  3. Step 3: Cross multiply
    13,757.82x = 20,631.54 × 5,439.66
  4. Step 4: Simplify right side
    13,757.82x = 112,228,562.88
  5. Step 5: Solve for x
    x = 112,228,562.88/13,757.82
  6. Step 6: Final answer
    x = 8,157.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.